Stereocaulon vesuvianum


    Thallus pale grey, initially squamulose but then, in its typical form, with tufts of ascending to erect, pale pinkish-orange branches (pseudopodetia), to 4cm, bearing abundant, rounded, flattened, deeply crenate scales (phyllocladia) that are grey in the centre when mature and damp, very variable in form but frequently reminiscent of smoke plumes from a volcano (hence 'vesuvianum'), globose clusters of soredia often present at the tips of the pseudopodetia, wrinkled brown to black cephalodia sometimes also produced; apothecia frequent, dark brown, button-like, on tips of upper side-branches. 

    Identification difficulty

    On siliceous and metalliferous rocks and stonework, occasionally on tops of urban walls.

    When to see it

    All year round.

    UK Status

    Fairly frequent but somewhat local in distribution. Often abundant in upland areas.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    UK Map